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BMS-Home Series — Compact Cell Monitoring for Residential Packs
4 Models available · Battery Management Systems (BMS)
Compact BMS boards monitor 8–16 series LiFePO4 cells in wall-mount and rack-mount home batteries, with SOC estimation and full protection in a small footprint.
Model Number Breakdown
- 8–16 series monitoring
- Passive balancing
- CAN/RS485 interface
- Multi-layer protection
Specifications Range
All specifications and dimensions can be customized upon request
| Key parameters | Model Range |
|---|---|
| Cell Type | LiFePO4 |
| Cells in Series | 8–16 |
| Voltage Accuracy | 3 mV, 2 mV |
| SOC Accuracy | 5 % |
| Balancing | Passive 50~300mA, Active 1~5A |
| Communication | CAN, RS485/Modbus |
⚙How It Works
The home BMS is the battery's guardian: it samples every cell's voltage and temperature and the pack current continuously, estimates state of charge and state of health, and enforces protection against over-charge, over-discharge, over-current, short-circuit and over-temperature. Passive balancing keeps cells matched so the pack delivers its full rated energy across thousands of cycles, and the BMS reports all of this to the inverter over CAN or RS485.
▦Structure & Composition
The BMS-Home board mounts on the pack's cell taps, with a multi-cell voltage monitor, temperature sensors, a shunt current sensor and balancing resistors. A microcontroller runs the SOC/SOH algorithms and drives the contactors and MOSFETs that disconnect the pack under fault. One isolated CAN or RS485 channel links it to the inverter, with optional dry contacts for external alarm signalling.
Model Range
| Model | Cells in Series | Voltage Accuracy | SOC Accuracy | Balancing | Communication | Reference Price |
|---|---|---|---|---|---|---|
| QD-BMS-8S | 8S | 3 mV | 5 % | Passive 50~300mA | CAN, RS485/Modbus | … |
| QD-BMS-12S | 12S | 3 mV | 5 % | Passive 50~300mA | CAN, RS485/Modbus | … |
| QD-BMS-16S | 16S | 3 mV | 5 % | Passive 50~300mA | CAN, RS485/Modbus | … |
| QD-BMS-16S-A | 16S | 2 mV | 5 % | Active 1~5A | CAN, RS485/Modbus | … |
Applications
Selection Guide
- Residential wall- and rack-mount packs of 8–16 series LiFePO4 cells.
- Match the series cell count to the pack voltage (8S for 25.6 V, 16S for 51.2 V).
- Confirm the BMS communication protocol matches the inverter or PCS it will be paired with.
Frequently Asked Questions
What does the BMS protect against?
Over-charge, over-discharge, over-current, short-circuit and over-temperature — it isolates the battery before any condition becomes dangerous.
Why is balancing needed?
Cell voltages drift over time; balancing equalises them so no single cell limits capacity or over-charges, preserving pack energy and life.
How accurate is SOC estimation?
Adaptive algorithms typically hold SOC within a few percent across the full temperature and current range.
Instant Selection & Quote Calculator
Select your specifications to get an estimated price instantly.
| Base price (interpolation) | $0 |
| × Product factor | ×1.0000 |
| × Country factor | ×1.0000 |
| × Copper-linked factor | ×1.0000 |
| + Options / accessories | $0 |
Complete equipment — no winding copper linkage
Reference prices are for estimation only and do not constitute a formal offer.
We will reply with your latest quote instantly.
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